.lt-main {
  display: flex;
}

.cate-aside {
  width: 90px;
  position: relative;

  ul{
    li{
      a{
        display: block;
        width: 90px;
        height: 50px;
        line-height: 50px;
        text-align: center;
        color: #666;
        background-color: #eee;
        border-right: 1px solid #ccc;
        border-bottom: 1px solid #ccc;
      }
    }
    li.current {
      a {
        background-color: #fff;
        border-right: none;
      }
    }
  }
}

.cate-content {
  flex: 1;
  a {
    margin-top: 10px;
    float: left;
    width: 33.33%;
    text-align: center;
    img {
      width: 70%;
    }
  }
}